Original standard number GB 522-84 HG/T 2443-1993 Tire static load performance determination method HG/T2443-1993 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T 2443 - 93
Method for Determination of Static Load Performance of Tires
Published on July 8, 1993
Ministry of Chemical Industry of the People's Republic of China
Implementation on July 1, 1994
W.bZsOsO.cO Chemical Industry Standard of the People's Republic of China
Method for Determination of Static Load Performance of Tires
1. Subject Content and Scope of Application
This standard specifies the test conditions, test methods and calculation of test results for static load performance of tires. HG/T 2443—93bzxZ.net
This standard applies to the determination of static load performance of tires for trucks, cars, engineering machinery, industrial vehicles, agricultural and animal-drawn vehicles, and motorcycles.
2 Reference standards
GB/T521 Method for determination of tire outer edge dimensions GB8170 Rules for numerical rounding off
GH9743 Passenger car radial tires
GB9744 Truck radial tires
HG/T2177 Appearance quality of bias tires
3 Test conditions
31 The tested tires must be parked for more than 24 hours after vulcanization. Before testing, they must be parked at a temperature of 18-36°C for more than 3 hours. ,3.2 The appearance quality of the tire must comply with the provisions of HG/T2177 or GB9743 and GB9744. 3.3 The tire pressure, load, and standard wheel must comply with the provisions of the current tire standards (when there are two usage conditions for single and double tires, the single tire load and corresponding air pressure are used).
Permissible deviation of air pressure: ±10kPa for 340kPa and below; ±20kPa for 340kPa and above.
Permissible deviation of load: ±2%,
The graduation of the tire pressure gauge is not greater than 20kPa.
34 After the tire is inflated, it should be parked at room temperature of 18 to 36 for more than 24 hours, and the tire pressure after parking should be measured. If the air pressure drops, it should be replenished to the specified air pressure, and the test can be carried out after parking for 15 minutes. 3.5 The pressure-bearing plane of the test machine must be vertical to the force direction of the tire. 4 Measurement and calculation
4.1 Install the tire specified in Chapter 3 of this standard on the testing machine and measure the tire outer diameter and section width in accordance with GB/T521.
4.2 Apply printing oil to the pressure-bearing part of the tire and place a piece of white paper between the tire and the pressure-bearing surface. Start the testing machine and apply a load to the tire to the specified value. After 15 minutes, measure the static radius and section width of the tire under load. 4.3 After completing 4.2, remove the imprint paper and use a planimeter to calculate the imprint area (cm\}. Calculate the integer. 4.4 Calculate the lower standard quantity according to formula (1)
Sinking plate (mm) = Section height of inflated tire - Section height of tire under load Approved by the Ministry of Chemical Industry of the People's Republic of China on July 8, 1993 (1)
Implementation on July 1, 1994
HG/T 2443 - 93
Height of section of pneumatic tire (mm)Outer diameter of pneumatic tire = Nominal diameter of wheel2
Height of section of tire under load (mm) =Stationary radius of wheel under loadNominal diameter of wheel
4.5Sinking rate is calculated according to formula (4)
Sinking amount
Sinking rate (%)
Height of section of pneumatic tire
4.Stone hardness coefficient is calculated according to formula (5)
Hardness coefficient =
Trace area × tire pressure
4.7Average pressure per unit area is calculated according to formula (6)Average pressure per unit area (kPa)
4.8Ground contact coefficient
Trace area
After measuring the major and minor axes of the trace, the ground contact coefficient is calculated according to formula (7) =
Trace major axis
Trace minor axis
4.9. The calculations in 4.4 and 4.5 of this standard shall be accurate to one decimal place, 4.6 and 4.8 shall be accurate to two decimal places, and 4.7 shall be rounded to an integer. The measurement and calculation results shall be rounded according to the provisions of GB8170. Additional notes:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China, and this standard is under the jurisdiction of the National Technical Committee for Tire and Wheel Standardization. This standard was drafted by the Beijing Rubber Industry Research and Design Institute of the Ministry of Chemical Industry. The main drafters of this standard are Li Yanyun, Liu Shifang, Shan Jibao, Wang Jinlan, Lv Yingxin, and Zhu Kexian. This standard is entrusted to the Beijing Rubber Industry Research and Design Institute of the Ministry of Chemical Industry for interpretation. From the date of implementation of this standard, the original national standard GB522-84 "Method for Determination of Static Load Performance of Tires" shall be invalidated, and the People's Republic of China
Chemical Industry Standard
Method for Determination of Static Load Performance of Tires
HG/T 2443—93
Editor: Chemical Industry Standards Department
(Chemical Industry Standardization Research Institute)
Postal code: [00013
Institute of Standardization of the Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16 Sheet: V4 Number of words: 4000 First edition: October 1993
First printing: October 1993
Number of copies: 1—500
Cost: 1.00 Yuan
Www.bzsosoCmHG/T
2443—
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